Valve with valve piston and valve seat

Abstract

The invention relates to a valve (1) which has a valve piston (2) with an extension (4). The extension (4) projects into a valve seat (5) at least in a closed position. Ribs (6) are arranged on the extension (4), with the width (8) of said ribs decreasing along a flow direction (9) of a fluid (10).

Description

[0001] Valve with valve piston and valve seat

[0002] The invention relates to a valve with a valve piston which, at least in one closed position, projects into a valve seat with a projection. Such valves are known in practice.

[0003] The invention further relates to a valve in which a valve seat is arranged at an inlet opening of a fluid outlet pipe. Such a valve is known in practice.

[0004] The invention is based on the objective of improving the flow behavior of fluids in valves. In particular, it aims to reduce noise that can occur when fluid flows through the valve.

[0005] To solve this problem, the invention proposes the features of claim 1. In particular, the invention proposes that, in a valve of the type described above, one or more ribs are arranged on the extension, wherein in a first region of the extension the width of the ribs decreases along a flow direction of a fluid. This improves the flow behavior of the fluid within the valve and minimizes noise generated when fluid flows through the valve.

[0006] The extension can, for example, have the shape of a cylinder or a cone. In a preferred embodiment, the extension has four ribs. However, it is also conceivable that the extension has more or fewer ribs.

[0007] The valve piston, with its extension, protrudes into the valve seat when the valve is closed. However, the extension can also protrude into the valve seat when the valve is partially open. It is also conceivable that the extension protrudes into the valve seat even when the valve is fully open.

[0008] The fluid could be water, for example. However, it is also conceivable that the valve is designed for other liquids and / or gases.

[0009] Preferably, the valve is a sanitary valve. This can prevent and / or reduce the occurrence of unpleasant noises in sanitary areas, for example in a bathroom.

[0010] In an advantageous embodiment, the length of the first section can be equal to or greater than one-third of a rib length. This length can be either along the flow direction or along the longitudinal axis of the valve piston. This allows the first section to be particularly large, thereby achieving greater noise reduction.

[0011] Preferably, the length of the first section is greater than half the length of a rib. This allows for even greater noise reduction.

[0012] In a further advantageous embodiment, the width in the first region can be monotonically decreasing. This means that the width in the first region can decrease or remain constant, but cannot increase again. In this way, a particularly smooth redirection of the fluid is possible. This can reduce noise that may be generated by the flow. Alternatively or additionally, the width can also decrease to form a concave contour. This enables particularly advantageous flow conditions.

[0013] In a further advantageous embodiment, the piston surface between two ribs can be designed as a continuous surface. Continuous in this context means, in particular, that the piston surface is free of corners and / or edges. Specifically, this means that all transitions in the piston surface are smooth. For example, the piston surface can be round and / or corrugated. This allows the fluid to be redirected particularly gently within the valve, thereby reducing noise.

[0014] In a further advantageous embodiment, a piston surface between two fins, for example the piston surface described above, can be designed as a concave surface. This allows the piston surface to be particularly uniform, which can lead to a reduction in noise during fluid flow.

[0015] In a further advantageous embodiment, a piston surface between two ribs, for example the piston surface described above, can be designed as a spoon-shaped recess. In this case, the piston surface is shaped as if a spoon had been dipped into it and the piston had subsequently removed a corresponding volume of material using the spoon. A piston surface shaped in this way can have a particularly advantageous effect on the fluid flow behavior and thus reduce noise generation. In a further advantageous embodiment, the outer diameter of the ribs can decrease in the first region along a flow direction. This outer diameter corresponds to an outer circumference that defines an outer, i.e., non-piston-side, contour of the ribs.

[0016] Alternatively or additionally, it can be provided that the outer diameter of the ribs decreases in a second region of the extension along a flow direction. It is conceivable that the second region is a sub-region of the first region or overlaps with the first region.

[0017] An advantage of this design is that noise generated by a flowing fluid can be reduced.

[0018] Alternatively or additionally, the features of the second dependent claim, which relates to a valve, are provided according to the invention to solve the aforementioned problem. In particular, it is proposed according to the invention that, in a valve of the type described above, an overhanging area of ​​the valve seat partially covers the inlet opening. The inlet opening is the opening of the fluid outlet pipe that is located first in a flow direction of the fluid, for example, the flow direction described above, and through which the fluid flowing through the valve enters the fluid outlet pipe.

[0019] This design initially narrows the inlet cross-section of the fluid outlet pipe. After the fluid has passed through the inlet opening of the fluid outlet pipe, the flow cross-section within the fluid outlet pipe increases. This allows the resulting flow to be influenced in such a way as to minimize noise generation. Preferably, the valve is one of the types described above or below. This allows the corresponding advantages to be utilized in this configuration as well. Particularly preferably, the valve is a sanitary valve, which allows the aforementioned advantages to be used in sanitary applications, for example, in a bathroom.

[0020] In an advantageous embodiment, the overhang area can be designed as a curved shape. Such a curved or rounded shape allows the flow to be redirected particularly gently. This can lead to a reduction in noise generated by the flow.

[0021] Alternatively or additionally, the overhang area is designed as a continuous shape. This can mean, in particular, that the overhang area has no edges and / or corners. Furthermore, it can mean that the surface of the overhang area is continuous, i.e., without jumps and / or irregularities. In this way, the flow can be gently redirected and noise generation minimized.

[0022] In a further advantageous embodiment, the inner diameter of the valve seat can be smaller than the inner diameter of the fluid outlet pipe. This ensures that an overhanging portion of the valve seat covers part of the fluid outlet pipe, thus narrowing the inlet opening of the fluid outlet pipe. This can be particularly advantageous for minimizing noise from the flowing fluid.

[0023] The valve seat and / or the fluid outlet pipe can be round or square.

[0024] In a further advantageous embodiment, a flow channel for a fluid, for example the fluid described above, can be formed in the open state of the valve. The flow channel is formed by a diaphragm of the valve, by a valve piston, for example the aforementioned valve piston, and by the valve seat. The flow channel has the same width at at least two points. These points are spaced apart from each other along a flow direction of the fluid, for example the flow direction described above.

[0025] The width of the flow channel corresponds to the flow cross-section through which the fluid flows. An open state of the valve can be a fully open state or a partially open state.

[0026] The two points can be separated by any distance. By ensuring that both points have the same distance, the noise generated by a fluid flow can be further reduced.

[0027] The diaphragm can be used to completely or almost completely seal the valve in a closed position, so that the fluid cannot flow through the valve.

[0028] In a further advantageous embodiment, the valve may be provided with a pilot valve. The pilot valve allows the valve to be controlled. The position of a valve diaphragm, for example, the diaphragm described above, can be predetermined by the position of a valve stem of the pilot valve. By providing a pilot valve, the valve can be switched particularly conveniently, especially with minimal actuation force. The invention will now be described in more detail with reference to exemplary embodiments, but is not limited to these. Further exemplary embodiments result from combining the features of one or more claims with each other and / or with one or more features of the exemplary embodiments.

[0029] It shows:

[0030] Figure 1 shows a sectional view of a valve according to the invention.

[0031] Figure 2 shows a view of the valve piston of the valve from Figure

[0032] 1 ,

[0033] Figure 3 shows a detailed view of the valve from Figure 1, in which a flow channel can be seen.

[0034] Figure 4 shows a sectional view of a valve according to the invention, which has a pilot valve.

[0035] Figure 5 shows a view of another valve piston according to the invention.

[0036] Figure 1 shows a valve 1 in an open state 20. The valve 1 comprises a valve piston 2, which has a projection 4. The projection 4 extends into a valve seat 5. In a closed position of the valve 1, the projection 4 would extend further into the valve seat 5.

[0037] The valve seat 5 is arranged on a fluid outlet pipe 16. An overhang area 17 of the valve seat 5 covers part of an inlet opening 15 of the fluid outlet pipe 16.

[0038] The overhang area 17 has an inwardly curved shape, i.e., towards the valve piston 2. Furthermore, the shape of the overhang area 17 is continuous. This means that the overhang area 17 has a smooth surface that is free of corners and edges. As a result, the fluid 10, which in this embodiment is water, can be redirected particularly gently.

[0039] It can also be seen that the inner diameter 18 of the overhang area 17 is smaller than the inner diameter 19 of the fluid outlet pipe 16. Thus, the fluid 10, which flows through the valve 1 in a flow direction 9, must first pass through a narrow flow channel 21 before it can flow through an inlet opening 15 into the fluid outlet pipe 16, where the flow cross-section becomes larger. This design minimizes the noise generated by the flowing water.

[0040] The extension 4 of the valve piston 2 has four ribs 6. The ribs 6 become smaller in width 8 in a first region 7 along the flow direction 9 (see Figure 2).

[0041] Furthermore, it can be seen that each piston surface 11, located between two ribs 6, is designed as a continuous surface 12, i.e., it has no corners or edges. In addition, the piston surface 11 is designed as a concave surface 13. These features allow the water to be redirected particularly gently within the valve. This minimizes the noise generated by the flow.

[0042] The valve 1 has a diaphragm 22 with which the valve 1 can be completely or almost completely closed in a closed position, so that no fluid 10, in this case no water, can flow through the valve 1.

[0043] Figure 2 shows the valve piston 2 of the valve 1 from Figure 1. In this view, it is particularly evident that the ribs 6 of the extension 4 of the valve piston 2 decrease in width 8 along the flow direction 9 of the fluid 10. The width 8 of the ribs 6 decreases strictly monotonically in the first region 7.

[0044] A length 29 of the first region 7 along the flow direction 9, which in this embodiment corresponds to the longitudinal direction of the valve piston 2, is greater than half a rib length 30. This promotes a reduction in noise generation.

[0045] It can also be seen that the piston surface 11 is designed as a spoon-shaped recess 14. This piston surface design 11 allows the fluid 10, in this case the water, to be redirected particularly gently in the valve 1. This reduces noise generated by the flow.

[0046] A second area 28 is formed on the extension 4, in which the outer diameter 27 of the ribs 6 decreases along the flow direction 9. The outer diameter 27 corresponds to a circumference that limits the outer circumference of the ribs 6. This further reduces noise generation.

[0047] Figure 3 shows another detailed view of the valve 1 from Figure 1. The flow channel 21 is particularly visible here.

[0048] Valve 1 is in an open state 20. Thus, a fluid 10 can flow along the flow direction 9 through the flow channel 21. The flow channel 21 is formed on one side by the overhang area 17 of the valve seat 5. On the other side, the flow channel 21 is formed by the diaphragm 22 and the extension 4 of the valve piston 2.

[0049] The flow channel 21 has the same width 24 at two points 23', 23''. The width 24 corresponds to the flow cross-section through which the fluid 10 must flow in the respective area. This design minimizes noise generation.

[0050] In this embodiment, two positions 23', 23'' are shown, which have the same width 24. However, it is also conceivable that, for example, three or more positions have the same width 24.

[0051] The open state 20 here does not refer to a fully open state of valve 1, but rather a partially open state of valve 1. The resulting flow rate of fluid 10 therefore does not correspond to the maximum possible flow rate.

[0052] The flow channel 21 is an area within the valve 1 through which the fluid 10 must flow in order to enter the fluid outlet pipe 16 through its inlet opening 15.

[0053] Furthermore, it can be clearly seen in Figure 3 that the inner diameter 18 of the overhang area 17 is smaller than the inner diameter 19 of the fluid outlet pipe 16. This results in particularly favorable flow characteristics for the fluid 10. This, in turn, minimizes noise generation.

[0054] Figure 4 shows a valve 1 according to the invention, which is designed as shown in Figures 1-3. However, in this embodiment, the valve 1 additionally has a pilot valve 25. The pilot valve 25 in turn has a valve plunger 3.

[0055] By actuating the pilot valve 25, the position 26 of the valve stem 3 can be changed. This means that the position of the valve piston 2 and the position of the diaphragm 22 can be predetermined via the valve stem 3. This allows a user of the valve 1 to switch it without requiring much force. This can be particularly convenient and also enables alternative design options, for example in sanitary applications.

[0056] Figure 5 shows another embodiment of a valve piston 2 according to the invention. The valve piston 2 is similar to the valve piston 2 from Figure 1, with the exception of the shape of the piston surface 11.

[0057] The width 8 of the ribs 6 also decreases noticeably along the flow direction 10.

[0058] The piston surface 11 is not continuous. Instead, the piston surface 11 has chamfers 31 which connect the partial surfaces of the piston surface 11. The chamfers 31 serve to redirect the fluid 10 particularly gently and thus minimize the resulting noise.

[0059] The invention proposes a valve 1 comprising a valve piston 2 with an extension 4. The extension 4 projects into a valve seat 5, at least in a closed position. Ribs 6 are arranged on the extension 4, the width 8 of which decreases along a flow direction 9 of a fluid 10.

[0060] / Reference Symbol List Reference Symbol List Valve Valve Piston Valve Tappet (of 25) Extension Valve Seat Rib First Area (of 4) Width (of 6) Flow Direction Fluid Piston Surface Continuous Surface (of 2) Concave Surface (of 2) Spoon-Shaped Recess Inlet Opening (of 16) Fluid Outlet Pipe Overhang Area Inner Diameter (of 5) Inner Diameter (of 16) Open State Flow Channel Diaphragm Position (of 21) Width (of 21) Pilot Valve Position (of 3) Outer Diameter (of 6) Second Area (of 4) Length (of 7) Rib Length Chamfer

[0061] / Claims

Claims

Claims Valve (1), in particular a sanitary valve, with a valve piston (2) which, at least in a closed position, projects into a valve seat (5) with a projection (4), characterized in that one or more ribs (6) are arranged on the projection (4), wherein in a first region (7) of the projection (4) a width (8) of the rib (n) (6) decreases along a flow direction (9) of a fluid (10).

2. Valve (1) according to the preceding claim, characterized in that a length (29) of the first region (7) is equal to or greater than one third, in particular greater than one half, of a rib length (30). Valve (1) according to one of the preceding claims, characterized in that in the first area (7) the width (8) monotonous and / or slopes down to form a concave contour. Valve (1) according to one of the preceding claims, characterized in that a piston surface (11) between two ribs (6) is formed as a continuous surface (12).

5. Valve (1) according to one of the preceding claims, characterized in that one or the piston surface (11) between two ribs (6) is designed as a concave surface (13). Valve (1) according to one of the preceding claims, characterized in that one or the piston surface (11) between two ribs (6) is formed as a spoon-shaped recess. (14) is trained.

7. Valve (1) according to one of the preceding claims, characterized in that an outer diameter (27) of the ribs (6) decreases in the first region (7) and / or in a second region (28) of the extension (4) along a flow direction (9).

8. Valve (1), in particular a sanitary valve, in particular according to the preamble of claim 1 or according to one of the preceding claims, wherein a valve seat (5) is arranged at an inlet opening (15) of a fluid outlet pipe (16), characterized in that an overhang area (17) of the valve seat (5) partially covers the inlet opening (15).

9. Valve (1) according to the preceding claim, characterized in that the overhang area (17) is designed as a curved and / or continuous shape.

10. Valve (1) according to one of the two preceding claims, characterized in that an inner diameter (18) of the valve seat (5) is smaller than an inner diameter (19) of the fluid outlet pipe (16).

11. Valve (1) according to one of the preceding claims, characterized in that in an open state (20) of the valve (1) a flow channel (21) for a fluid or the fluid (10) is formed, wherein the flow channel (21) is formed by a diaphragm (22) of the valve (1), by a valve piston (2) and by the valve seat (5), wherein the flow channel (21) has the same width (24) at at least two points (23', 23'') which points (23', 23'') are spaced apart from each other along a or the flow direction (9) of the fluid (10). exhibits .

12. Valve (1) according to one of the preceding claims, characterized in that the valve (1) has a pilot valve (25) with which the valve (1) can be controlled, wherein a position (26) of one or the The position of the diaphragm (22) of the valve (1) can be predetermined by a position (26) of a valve tappet (3) of the pilot valve (25). / Summary

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